/*
|
* Copyright (c) 2018-2028, Chill Zhuang All rights reserved.
|
*
|
* Redistribution and use in source and binary forms, with or without
|
* modification, are permitted provided that the following conditions are met:
|
*
|
* Redistributions of source code must retain the above copyright notice,
|
* this list of conditions and the following disclaimer.
|
* Redistributions in binary form must reproduce the above copyright
|
* notice, this list of conditions and the following disclaimer in the
|
* documentation and/or other materials provided with the distribution.
|
* Neither the name of the dreamlu.net developer nor the names of its
|
* contributors may be used to endorse or promote products derived from
|
* this software without specific prior written permission.
|
* Author: Chill 庄骞 (smallchill@163.com)
|
*/
|
package org.sxkj.gd.workorder.utils;
|
|
import com.google.zxing.BarcodeFormat;
|
import com.google.zxing.EncodeHintType;
|
import com.google.zxing.WriterException;
|
import com.google.zxing.client.j2se.MatrixToImageWriter;
|
import com.google.zxing.common.BitMatrix;
|
import com.google.zxing.qrcode.QRCodeWriter;
|
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
|
|
import java.io.ByteArrayOutputStream;
|
import java.io.IOException;
|
import java.net.URLEncoder;
|
import java.nio.charset.StandardCharsets;
|
import java.util.HashMap;
|
import java.util.Map;
|
|
public final class GdQrCodeUtil {
|
|
private static final double PI = 3.1415926535897932384626;
|
private static final double A = 6378245.0;
|
private static final double EE = 0.00669342162296594323;
|
|
private GdQrCodeUtil() {
|
}
|
|
/**
|
* 生成高德地图导航链接，自动将 WGS84 坐标转换为 GCJ-02 坐标。
|
*
|
* @param longitude 目的地经度（WGS84）
|
* @param latitude 目的地纬度（WGS84）
|
* @param destination 目的地名称
|
* @return 编码后的高德导航链接
|
*/
|
public static String generateAmapNavigationUrl(String longitude, String latitude, String destination) {
|
try {
|
double wgsLon = Double.parseDouble(longitude);
|
double wgsLat = Double.parseDouble(latitude);
|
|
double[] gcjCoords = wgs84ToGcj02(wgsLon, wgsLat);
|
String encodedDestination = URLEncoder.encode(destination, StandardCharsets.UTF_8.name());
|
|
return String.format(
|
"https://uri.amap.com/marker?position=%s,%s&name=%s&from=ztzf",
|
gcjCoords[0], gcjCoords[1], encodedDestination
|
);
|
} catch (Exception e) {
|
return "";
|
}
|
}
|
|
/**
|
* WGS84 坐标转换为 GCJ-02 坐标。
|
*
|
* @param wgsLon WGS84 经度
|
* @param wgsLat WGS84 纬度
|
* @return [经度, 纬度] GCJ-02 坐标
|
*/
|
public static double[] wgs84ToGcj02(double wgsLon, double wgsLat) {
|
if (outOfChina(wgsLon, wgsLat)) {
|
return new double[]{wgsLon, wgsLat};
|
}
|
|
double dLat = transformLat(wgsLon - 105.0, wgsLat - 35.0);
|
double dLon = transformLon(wgsLon - 105.0, wgsLat - 35.0);
|
double radLat = wgsLat / 180.0 * PI;
|
double magic = Math.sin(radLat);
|
magic = 1 - EE * magic * magic;
|
double sqrtMagic = Math.sqrt(magic);
|
|
dLat = (dLat * 180.0) / ((A * (1 - EE)) / (magic * sqrtMagic) * PI);
|
dLon = (dLon * 180.0) / (A / sqrtMagic * Math.cos(radLat) * PI);
|
|
double gcjLat = wgsLat + dLat;
|
double gcjLon = wgsLon + dLon;
|
|
return new double[]{gcjLon, gcjLat};
|
}
|
|
private static boolean outOfChina(double lon, double lat) {
|
return (lon < 72.004 || lon > 137.8347) || (lat < 0.8293 || lat > 55.8271);
|
}
|
|
private static double transformLat(double x, double y) {
|
double ret = -100.0 + 2.0 * x + 3.0 * y + 0.2 * y * y + 0.1 * x * y
|
+ 0.2 * Math.sqrt(Math.abs(x));
|
ret += (20.0 * Math.sin(6.0 * x * PI) + 20.0 * Math.sin(2.0 * x * PI)) * 2.0 / 3.0;
|
ret += (20.0 * Math.sin(y * PI) + 40.0 * Math.sin(y / 3.0 * PI)) * 2.0 / 3.0;
|
ret += (160.0 * Math.sin(y / 12.0 * PI) + 320 * Math.sin(y * PI / 30.0)) * 2.0 / 3.0;
|
return ret;
|
}
|
|
private static double transformLon(double x, double y) {
|
double ret = 300.0 + x + 2.0 * y + 0.1 * x * x + 0.1 * x * y
|
+ 0.1 * Math.sqrt(Math.abs(x));
|
ret += (20.0 * Math.sin(6.0 * x * PI) + 20.0 * Math.sin(2.0 * x * PI)) * 2.0 / 3.0;
|
ret += (20.0 * Math.sin(x * PI) + 40.0 * Math.sin(x / 3.0 * PI)) * 2.0 / 3.0;
|
ret += (150.0 * Math.sin(x / 12.0 * PI) + 300.0 * Math.sin(x / 30.0 * PI)) * 2.0 / 3.0;
|
return ret;
|
}
|
|
/**
|
* 生成二维码图片字节数组（PNG）。
|
*
|
* @param text 编码文本
|
* @param width 宽度
|
* @param height 高度
|
* @return 二维码图片字节数组
|
*/
|
public static byte[] generateQrCodeImageBytes(String text, int width, int height) throws WriterException, IOException {
|
QRCodeWriter qrCodeWriter = new QRCodeWriter();
|
Map<EncodeHintType, Object> hints = new HashMap<>();
|
hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.M);
|
hints.put(EncodeHintType.CHARACTER_SET, StandardCharsets.UTF_8.name());
|
hints.put(EncodeHintType.MARGIN, 1);
|
|
BitMatrix bitMatrix = qrCodeWriter.encode(text, BarcodeFormat.QR_CODE, width, height, hints);
|
try (ByteArrayOutputStream baos = new ByteArrayOutputStream()) {
|
MatrixToImageWriter.writeToStream(bitMatrix, "PNG", baos);
|
return baos.toByteArray();
|
}
|
}
|
}
|
